1
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Skvortsova A, Han JH, Tosovska A, Bainova P, Kim RM, Burtsev V, Erzina M, Fitl P, Urbanova M, Svorcik V, Ha IH, Nam KT, Lyutakov O. Enantioselective Molecular Detection by Surface Enhanced Raman Scattering at Chiral Gold Helicoids on Grating Surfaces. ACS APPLIED MATERIALS & INTERFACES 2024; 16:48526-48535. [PMID: 39224930 PMCID: PMC11403552 DOI: 10.1021/acsami.4c09301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Distinct advantages of surface enhanced Raman scattering (SERS) in molecular detection can benefit the enantioselective discrimination of specific molecular configurations. However, many of the recent methods still lack versatility and require customized anchors to chemically interact with the studied analyte. In this work, we propose the utilization of helicoid-shaped chiral gold nanoparticles arranged in an ordered array on a gold grating surface for enantioselective SERS recognition. This arrangement ensured a homogeneous distribution of chiral plasmonic hot spots and facilitated the enhancement of the SERS response of targeted analytes through plasmon coupling between gold helicoid multimers (formed in the grating valleys) and adjacent regions of the gold grating. Naproxen enantiomers (R(+) and S(-)) were employed as model compounds, revealing a clear dependence of their SERS response on the chirality of the gold helicoids. Additionally, propranolol and penicillamine enantiomers were used to validate the universality of the proposed approach. Finally, numerical simulations were conducted to elucidate the roles of intensified local electric field and optical helicity density on the SERS signal intensity and on the chirality of the nanoparticles and enantiomers. Unlike previously reported methods, our approach relies on the excitation of a chiral plasmonic near-field and its interaction with the chiral environment of analyte molecules, obviating the need for the enantioselective entrapment of targeted molecules. Moreover, our method is not limited to specific analyte classes and can be applied to a broad range of chiral molecules.
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Affiliation(s)
- Anastasiia Skvortsova
- Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - Jeong Hyun Han
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Andrea Tosovska
- Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - Polina Bainova
- Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - Ryeong Myeong Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Vasilii Burtsev
- Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - Mariia Erzina
- Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - Premysl Fitl
- Department of Physics and Measurements, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - Marie Urbanova
- Department of Physics and Measurements, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - Vaclav Svorcik
- Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
| | - In Han Ha
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Oleksiy Lyutakov
- Department of Solid State Engineering, University of Chemistry and Technology, Prague 16628, Czech Republic
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2
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Zhou J, Huang S, Peng J, Hou Y. Origination of the chiroptical effect in plasmonic nano-structures in the view of quasi-normal mode theory. OPTICS LETTERS 2024; 49:1149-1152. [PMID: 38426960 DOI: 10.1364/ol.519256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 01/30/2024] [Indexed: 03/02/2024]
Abstract
General chiroptical effects describe all of the interaction differences between light carrying opposite spins and chiral matters, such as circular dichroism, optical activity, and chiral Raman optical activity, and have been proven to hold great promise for extensive applications in physics, chemistry, and biology. However, the underlying physical mechanism is usually explained intangibly by the twisted currents in chiral geometry, where the cross coupling between the electric and magnetic dipoles breaks the degeneracy of the helicity eigenmodes. In this Letter, we construct a clear sight on the origination of the chiroptical effect in the view of the eigenstates of a non-Hermitian system, i.e., quasi-normal modes (QNMs). The intrinsic chiroptical effect comes from the chiral QNMs, which have distinct excitation and emission differences in both phase and intensity for lights carrying opposite spins, while the extrinsic chiroptical effect coming from the achiral QNMs requires specific illumination and observation conditions, where the low symmetrical QNM can generate chiroptical effects in both absorption and scattering, but the highly symmetrical QNMs can only generate chiroptical effects in scattering through the coherent superposition of several QNMs. Our findings offer an in-depth understanding of the chiroptical effect and have the potential to bring broad inspiration to the design and applications of chiroptical effects.
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3
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Kim RM, Han JH, Lee SM, Kim H, Lim YC, Lee HE, Ahn HY, Lee YH, Ha IH, Nam KT. Chiral plasmonic sensing: From the perspective of light-matter interaction. J Chem Phys 2024; 160:061001. [PMID: 38341778 DOI: 10.1063/5.0178485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/07/2024] [Indexed: 02/13/2024] Open
Abstract
Molecular chirality is represented as broken mirror symmetry in the structural orientation of constituent atoms and plays a pivotal role at every scale of nature. Since the discovery of the chiroptic property of chiral molecules, the characterization of molecular chirality is important in the fields of biology, physics, and chemistry. Over the centuries, the field of optical chiral sensing was based on chiral light-matter interactions between chiral molecules and polarized light. Starting from simple optics-based sensing, the utilization of plasmonic materials that could control local chiral light-matter interactions by squeezing light into molecules successfully facilitated chiral sensing into noninvasive, ultrasensitive, and accurate detection. In this Review, the importance of plasmonic materials and their engineering in chiral sensing are discussed based on the principle of chiral light-matter interactions and the theory of optical chirality and chiral perturbation; thus, this Review can serve as a milestone for the proper design and utilization of plasmonic nanostructures for improved chiral sensing.
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Affiliation(s)
- Ryeong Myeong Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeong Hyun Han
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Soo Min Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyeohn Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yae-Chan Lim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hye-Eun Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyo-Yong Ahn
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoon Ho Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - In Han Ha
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
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4
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Wang F, Wang X, Lu X, Huang C. Nanophotonic Enhanced Chiral Sensing and Its Biomedical Applications. BIOSENSORS 2024; 14:39. [PMID: 38248416 PMCID: PMC11154488 DOI: 10.3390/bios14010039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/03/2024] [Accepted: 01/10/2024] [Indexed: 01/23/2024]
Abstract
Chiral sensing is crucial in the fields of biology and the pharmaceutical industry. Many naturally occurring biomolecules, i.e., amino acids, sugars, and nucleotides, are inherently chiral. Their enantiomers are strongly associated with the pharmacological effects of chiral drugs. Owing to the extremely weak chiral light-matter interactions, chiral sensing at an optical frequency is challenging, especially when trace amounts of molecules are involved. The nanophotonic platform allows for a stronger interaction between the chiral molecules and light to enhance chiral sensing. Here, we review the recent progress in nanophotonic-enhanced chiral sensing, with a focus on the superchiral near-field and enhanced circular dichroism (CD) spectroscopy generated in both the dielectric and in plasmonic structures. In addition, the recent applications of chiral sensing in biomedical fields are discussed, including the detection and treatment of difficult diseases, i.e., Alzheimer's disease, diabetes, and cancer.
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Affiliation(s)
- Fei Wang
- Institute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xue Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
| | - Xinchao Lu
- Institute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, China;
| | - Chengjun Huang
- Institute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Mayerhöfer TG, Singh AK, Huang JS, Krafft C, Popp J. Unveiling chiral optical constants of α-pinene and propylene oxide through ATR and VCD spectroscopy in the mid-infrared range. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 302:123136. [PMID: 37454437 DOI: 10.1016/j.saa.2023.123136] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
Optical constants functions of analytes are indispensable for the effective design of plasmonic sensors. Such sensors are potentially able to enhance the sensitivity by several order of magnitudes which can greatly facilitate the determination of the generally weak spectral signals caused by vibrational circular dichroism. Accordingly, to demonstrate how to obtain these functions, we have determined the dielectric and chirality admittance functions of α-Pinene and Propylene oxide in the mid-infrared spectral range using attenuated total reflection and vibrational circular dichroism spectroscopy. Our iterative formalism starts with an estimation of the absorption index function, followed by the calculation of the refractive index function using the Kramers-Kronig relation and a modelled spectrum based on Fresnel's equations. By comparing the experimental and modelled spectra, we improve the absorption index function. To determine the chirality admittance function, we use the same iterative formalism, but with a modified 4x4 matrix formalism formulated by Berreman. Our results show that the experimental absorbance difference is independent of the dielectric function of the chiral substance and depends linearly on the cuvette thickness. Additionally, we provide a sum rule that can be used to assess the quality of VCD spectra and determine the position of the baseline. Our findings provide crucial insights into the optical properties of chiral substances in the mid-infrared spectral range, which have important implications for a range of applications in fields such as analytical chemistry and materials science.
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Affiliation(s)
- Thomas G Mayerhöfer
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Albert‑Einstein‑Straße 9, 07745 Jena, Germany; Institute of Physical Chemistry (IPC) and Abbe Center of Photonics (ACP), Friedrich Schiller University Jena, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Helmholtzweg 4, 07743 Jena, Germany.
| | - Ankit K Singh
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Albert‑Einstein‑Straße 9, 07745 Jena, Germany
| | - Jer-Shing Huang
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Albert‑Einstein‑Straße 9, 07745 Jena, Germany
| | - Christoph Krafft
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Albert‑Einstein‑Straße 9, 07745 Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Albert‑Einstein‑Straße 9, 07745 Jena, Germany; Institute of Physical Chemistry (IPC) and Abbe Center of Photonics (ACP), Friedrich Schiller University Jena, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Helmholtzweg 4, 07743 Jena, Germany
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6
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Doumani J, Lou M, Dewey O, Hong N, Fan J, Baydin A, Zahn K, Yomogida Y, Yanagi K, Pasquali M, Saito R, Kono J, Gao W. Engineering chirality at wafer scale with ordered carbon nanotube architectures. Nat Commun 2023; 14:7380. [PMID: 37968325 PMCID: PMC10651894 DOI: 10.1038/s41467-023-43199-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 11/03/2023] [Indexed: 11/17/2023] Open
Abstract
Creating artificial matter with controllable chirality in a simple and scalable manner brings new opportunities to diverse areas. Here we show two such methods based on controlled vacuum filtration - twist stacking and mechanical rotation - for fabricating wafer-scale chiral architectures of ordered carbon nanotubes (CNTs) with tunable and large circular dichroism (CD). By controlling the stacking angle and handedness in the twist-stacking approach, we maximize the CD response and achieve a high deep-ultraviolet ellipticity of 40 ± 1 mdeg nm-1. Our theoretical simulations using the transfer matrix method reproduce the experimentally observed CD spectra and further predict that an optimized film of twist-stacked CNTs can exhibit an ellipticity as high as 150 mdeg nm-1, corresponding to a g factor of 0.22. Furthermore, the mechanical rotation method not only accelerates the fabrication of twisted structures but also produces both chiralities simultaneously in a single sample, in a single run, and in a controllable manner. The created wafer-scale objects represent an alternative type of synthetic chiral matter consisting of ordered quantum wires whose macroscopic properties are governed by nanoscopic electronic signatures and can be used to explore chiral phenomena and develop chiral photonic and optoelectronic devices.
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Affiliation(s)
- Jacques Doumani
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, TX, USA
- Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA
| | - Minhan Lou
- Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA
| | - Oliver Dewey
- Carbon Hub, Rice University, Houston, TX, USA
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA
| | - Nina Hong
- J.A. Woollam Co., Inc., Lincoln, NE, USA
| | - Jichao Fan
- Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA
| | - Andrey Baydin
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA
- Smalley-Curl Institute, Rice University, Houston, TX, USA
| | - Keshav Zahn
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA
| | - Yohei Yomogida
- Department of Physics, Tokyo Metropolitan University, Tokyo, Japan
| | - Kazuhiro Yanagi
- Department of Physics, Tokyo Metropolitan University, Tokyo, Japan
| | - Matteo Pasquali
- Carbon Hub, Rice University, Houston, TX, USA
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA
- Smalley-Curl Institute, Rice University, Houston, TX, USA
- Department of Chemistry, Rice University, Houston, TX, USA
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA
| | - Riichiro Saito
- Department of Physics, Tokyo Metropolitan University, Tokyo, Japan
- Department of Physics, Tohoku University, Sendai, Japan
- Department of Physics, National Taiwan Normal University, Taipei, Taiwan
| | - Junichiro Kono
- Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA
- Carbon Hub, Rice University, Houston, TX, USA
- Smalley-Curl Institute, Rice University, Houston, TX, USA
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA
- Department of Physics and Astronomy, Rice University, Houston, TX, USA
| | - Weilu Gao
- Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA.
- Carbon Hub, Rice University, Houston, TX, USA.
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7
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Han JH, Kim D, Kim J, Kim G, Fischer P, Jeong HH. Plasmonic Nanostructure Engineering with Shadow Growth. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2107917. [PMID: 35332960 DOI: 10.1002/adma.202107917] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Physical shadow growth is a vacuum deposition technique that permits a wide variety of 3D-shaped nanoparticles and structures to be fabricated from a large library of materials. Recent advances in the control of the shadow effect at the nanoscale expand the scope of nanomaterials from spherical nanoparticles to complex 3D shaped hybrid nanoparticles and structures. In particular, plasmonically active nanomaterials can be engineered in their shape and material composition so that they exhibit unique physical and chemical properties. Here, the recent progress in the development of shadow growth techniques to realize hybrid plasmonic nanomaterials is discussed. The review describes how fabrication permits the material response to be engineered and highlights novel functions. Potential fields of application with a focus on photonic devices, biomedical, and chiral spectroscopic applications are discussed.
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Affiliation(s)
- Jang-Hwan Han
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Doeun Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Juhwan Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Gyurin Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Peer Fischer
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569, Stuttgart, Germany
- Institute of Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Hyeon-Ho Jeong
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
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8
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Goerlitzer ESA, Zapata-Herrera M, Ponomareva E, Feller D, Garcia-Etxarri A, Karg M, Aizpurua J, Vogel N. Molecular-Induced Chirality Transfer to Plasmonic Lattice Modes. ACS PHOTONICS 2023; 10:1821-1831. [PMID: 37363627 PMCID: PMC10288536 DOI: 10.1021/acsphotonics.3c00174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Indexed: 06/28/2023]
Abstract
Molecular chirality plays fundamental roles in biology. The chiral response of a molecule occurs at a specific spectral position, determined by its molecular structure. This fingerprint can be transferred to other spectral regions via the interaction with localized surface plasmon resonances of gold nanoparticles. Here, we demonstrate that molecular chirality transfer occurs also for plasmonic lattice modes, providing a very effective and tunable means to control chirality. We use colloidal self-assembly to fabricate non-close packed, periodic arrays of achiral gold nanoparticles, which are embedded in a polymer film containing chiral molecules. In the presence of the chiral molecules, the surface lattice resonances (SLRs) become optically active, i.e., showing handedness-dependent excitation. Numerical simulations with varying lattice parameters show circular dichroism peaks shifting along with the spectral positions of the lattice modes, corroborating the chirality transfer to these collective modes. A semi-analytical model based on the coupling of single-molecular and plasmonic resonances rationalizes this chirality transfer.
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Affiliation(s)
- Eric Sidney Aaron Goerlitzer
- Institute
of Particle Technology, Friedrich-Alexander
University Erlangen-Nürnberg, Cauerstraße 4, D-91058 Erlangen, Germany
| | - Mario Zapata-Herrera
- Materials
Physics Center CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - Ekaterina Ponomareva
- Institut
für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, Düsseldorf D-40225 Germany
| | - Déborah Feller
- Institut
für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, Düsseldorf D-40225 Germany
| | - Aitzol Garcia-Etxarri
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
- IKERBASQUE, Basque
Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
| | - Matthias Karg
- Institut
für Physikalische Chemie I: Kolloide und Nanooptik, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, Düsseldorf D-40225 Germany
| | - Javier Aizpurua
- Materials
Physics Center CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
| | - Nicolas Vogel
- Institute
of Particle Technology, Friedrich-Alexander
University Erlangen-Nürnberg, Cauerstraße 4, D-91058 Erlangen, Germany
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9
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Choi S, Im SW, Huh JH, Kim S, Kim J, Lim YC, Kim RM, Han JH, Kim H, Sprung M, Lee SY, Cha W, Harder R, Lee S, Nam KT, Kim H. Strain and crystallographic identification of the helically concaved gap surfaces of chiral nanoparticles. Nat Commun 2023; 14:3615. [PMID: 37330546 DOI: 10.1038/s41467-023-39255-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 06/02/2023] [Indexed: 06/19/2023] Open
Abstract
Identifying the three-dimensional (3D) crystal plane and strain-field distributions of nanocrystals is essential for optical, catalytic, and electronic applications. However, it remains a challenge to image concave surfaces of nanoparticles. Here, we develop a methodology for visualizing the 3D information of chiral gold nanoparticles ≈ 200 nm in size with concave gap structures by Bragg coherent X-ray diffraction imaging. The distribution of the high-Miller-index planes constituting the concave chiral gap is precisely determined. The highly strained region adjacent to the chiral gaps is resolved, which was correlated to the 432-symmetric morphology of the nanoparticles and its corresponding plasmonic properties are numerically predicted from the atomically defined structures. This approach can serve as a comprehensive characterization platform for visualizing the 3D crystallographic and strain distributions of nanoparticles with a few hundred nanometers, especially for applications where structural complexity and local heterogeneity are major determinants, as exemplified in plasmonics.
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Affiliation(s)
- Sungwook Choi
- Department of Physics, Sogang University, Seoul, 04107, Korea
| | - Sang Won Im
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Ji-Hyeok Huh
- KU-KIST Graduate School of Converging Science & Technology, Korea University, Seoul, 02481, Korea
| | - Sungwon Kim
- Department of Physics, Sogang University, Seoul, 04107, Korea
| | - Jaeseung Kim
- Department of Physics, Sogang University, Seoul, 04107, Korea
| | - Yae-Chan Lim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Ryeong Myeong Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Jeong Hyun Han
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Hyeohn Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea
| | - Michael Sprung
- Deutsches Elektronen-Synchrotron (DESY), Hamburg, 22607, Germany
| | - Su Yong Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang, 37673, Korea
| | - Wonsuk Cha
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Ross Harder
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Seungwoo Lee
- KU-KIST Graduate School of Converging Science & Technology, Korea University, Seoul, 02481, Korea
- Department of Integrative Energy Engineering and KU Photonics Center, Korea University, Seoul, 02481, Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Korea.
| | - Hyunjung Kim
- Department of Physics, Sogang University, Seoul, 04107, Korea.
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10
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Mohammadi E, Raziman TV, Curto AG. Nanophotonic Chirality Transfer to Dielectric Mie Resonators. NANO LETTERS 2023; 23:3978-3984. [PMID: 37126640 PMCID: PMC10176573 DOI: 10.1021/acs.nanolett.3c00739] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Nanophotonics can boost the weak circular dichroism of chiral molecules. One mechanism for enhanced chiral sensing relies on using a resonator to create fields with high optical chirality at the molecular position. Here, we elucidate how the reverse interaction between molecules and the resonator, called chirality transfer, can produce stronger circular dichroism. The chiral analyte modifies the electric and magnetic dipole moments of the resonator, imprinting a chiral response on an otherwise achiral resonance. We demonstrate that silicon nanoparticles and metasurfaces tailored for chirality transfer generate chiroptical signals orders of magnitude higher than the contribution from optical chirality alone. We derive closed-form equations for the dependence of chirality transfer on molecular chirality, molecule-resonator distance, and Mie coefficients. We propose a dielectric metasurface for a 900-fold circular dichroism enhancement on the basis of these principles. Finally, we identify a fundamental limit to chirality transfer. Our findings thus establish key concepts for nanophotonic chiral sensing.
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Affiliation(s)
- Ershad Mohammadi
- Department of Applied Physics and Eindhoven Hendrik Casimir Institute, Eindhoven University of Technology, 5600MB Eindhoven, The Netherlands
| | - T V Raziman
- Department of Applied Physics and Eindhoven Hendrik Casimir Institute, Eindhoven University of Technology, 5600MB Eindhoven, The Netherlands
| | - Alberto G Curto
- Department of Applied Physics and Eindhoven Hendrik Casimir Institute, Eindhoven University of Technology, 5600MB Eindhoven, The Netherlands
- Photonics Research Group, Ghent University-imec, 9052 Ghent, Belgium
- Center for Nano- and Biophotonics, Ghent University, 9052 Ghent, Belgium
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11
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McCarthy L, Verma O, Naidu GN, Bursi L, Alabastri A, Nordlander P, Link S. Chiral Plasmonic Pinwheels Exhibit Orientation-Independent Linear Differential Scattering under Asymmetric Illumination. CHEMICAL & BIOMEDICAL IMAGING 2023; 1:30-39. [PMID: 37122830 PMCID: PMC10131493 DOI: 10.1021/cbmi.2c00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/09/2023] [Accepted: 02/14/2023] [Indexed: 05/02/2023]
Abstract
Plasmonic nanoantennas have considerably stronger polarization-dependent optical properties than their molecular counterparts, inspiring photonic platforms for enhancing molecular dichroism and providing fundamental insight into light-matter interactions. One such insight is that even achiral nanoparticles can yield strong optical activity when they are asymmetrically illuminated from a single oblique angle instead of evenly illuminated. This effect, called extrinsic chirality, results from the overall chirality of the experimental geometry and strongly depends on the orientation of the incident light. Although extrinsic chirality has been well-characterized, an analogous effect involving linear polarization sensitivity has not yet been discussed. In this study, we investigate the differential scattering of rotationally symmetric chiral plasmonic pinwheels when asymmetrically irradiated with linearly polarized light. Despite their high rotational symmetry, we observe substantial linear differential scattering that is maintained over all pinwheel orientations. We demonstrate that this orientation-independent linear differential scattering arises from the broken mirror and rotational symmetries of our overall experimental geometry. Our results underscore the necessity of considering both the rotational symmetry of the nanoantenna and the experimental setup, including illumination direction and angle, when performing plasmon-enhanced chiroptical characterizations. Our results demonstrate spectroscopic signatures of an effect analogous to extrinsic chirality for linear polarizations.
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Affiliation(s)
- Lauren
A. McCarthy
- Department
of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Ojasvi Verma
- Department
of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Gopal Narmada Naidu
- Department
of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Luca Bursi
- Department
of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Alessandro Alabastri
- Department
of Electrical and Computer Engineering, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Peter Nordlander
- Department
of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Electrical and Computer Engineering, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Stephan Link
- Department
of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department
of Electrical and Computer Engineering, Rice University, 6100
Main Street, Houston, Texas 77005, United States
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12
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Han JH, Lim YC, Kim RM, Lv J, Cho NH, Kim H, Namgung SD, Im SW, Nam KT. Neural-Network-Enabled Design of a Chiral Plasmonic Nanodimer for Target-Specific Chirality Sensing. ACS NANO 2023; 17:2306-2317. [PMID: 36648062 DOI: 10.1021/acsnano.2c08867] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Quantitative analysis of chiral molecules in various solvents is essential. However, there are still many challenges to enhancing the sensitivity in precisely determining both concentration and chirality. Here, we built an algorithmic methodology to predict and optimally design the chiroptical response of chiral plasmonic sensors for a specific target chiral analyte with the aid of deep learning. Based upon the analytic and intuitive understanding of the Born-Kuhn type plasmonic nanodimer, we designed and trained the neural networks that can successfully predict the chiroptical properties and further inversely design the plasmonic structure to achieve the intended circular dichroism. The developed algorithm could identify the optimum structure exhibiting the maximum sensitivity for the given specific analytes. Surprisingly, we discovered that sensitivity strongly depends on the various conditions of analytes and can be finely tuned with the structural parameters of plasmonic nanodimers. We envision that this study can provide a general platform to develop ultrasensitive chiral plasmonic sensors whose structure and sensitivity have been evolved algorithmically for adoption in specific applications.
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Affiliation(s)
- Jeong Hyun Han
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Yae-Chan Lim
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Ryeong Myeong Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Jiawei Lv
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Nam Heon Cho
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Hyeohn Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Seok Daniel Namgung
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Sang Won Im
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul08826, Republic of Korea
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13
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Yang X, Huang S, Chikkaraddy R, Goerlitzer ESA, Chen F, Du J, Vogel N, Weiss T, Baumberg JJ, Hou Y. Chiral Plasmonic Shells: High-Performance Metamaterials for Sensitive Chiral Biomolecule Detection. ACS APPLIED MATERIALS & INTERFACES 2022; 14:53183-53192. [PMID: 36379040 DOI: 10.1021/acsami.2c16752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Low-cost and large-area chiral metamaterials (CMs) are highly desirable for practical applications in chiral biosensors, nanophotonic chiral emitters, and beyond. A promising fabrication method takes advantage of self-assembled colloidal particles, onto which metal patches with defined orientation are created using glancing angle deposition (GLAD). However, using this method to make uniform and well-defined CMs over macroscopic areas is challenging. Here, we fabricate a uniform large-area colloidal particle array by interface-mediated self-assembly and precisely control the structural handedness of chiral plasmonic shells (CPSs) using GLAD. Strong chiroptical signals arise from twisted currents at the main, corner, and edge of CPSs, allowing a balance between strong chiroptical and high transmittance properties. Our shell-like chiral geometry shows excellent sensor performance in detecting chiral molecules due to the formation of uniform superchiral fields. Systematic investigations optimize the interplay between peak and null point resonances in different CPSs and result in a record consistency chiral sensor parameter U, i.e., 3.77 for null points and 0.0867 for peaks, which are about 54 and 1.257 times larger than the highest value (0.068) of previously reported CMs. The geometrical chirality, surface plasmonic resonance, chiral surface lattice resonance, and chiral sensor performance evidence the chiroptical effect and the excellent chiral sensor performance.
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Affiliation(s)
- Xiu Yang
- College of Physics, Sichuan University, Chengdu610065, China
| | - Shanshan Huang
- College of Physics, Sichuan University, Chengdu610065, China
| | - Rohit Chikkaraddy
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, CambridgeCB3 0HE, United Kingdom
| | - Eric S A Goerlitzer
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstraße 4, ErlangenD-91058, Germany
| | - Feiliang Chen
- School of Electronics Science Engineering, University of Electronic Science and Technology of China, Chengdu610056, China
| | - Jinglei Du
- College of Physics, Sichuan University, Chengdu610065, China
| | - Nicolas Vogel
- Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstraße 4, ErlangenD-91058, Germany
| | - Thomas Weiss
- Physics Institute and Research Center SCoPE, University of Stuttgart, Stuttgart70569, Germany
- Institute of Physics, University of Graz, and NAWI Graz, Graz8010, Austria
| | - Jeremy J Baumberg
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, CambridgeCB3 0HE, United Kingdom
| | - Yidong Hou
- College of Physics, Sichuan University, Chengdu610065, China
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, CambridgeCB3 0HE, United Kingdom
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14
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Liao X, Gui L, Gao A, Yu Z, Xu K. Intelligent design of the chiral metasurfaces for flexible targets: combining a deep neural network with a policy proximal optimization algorithm. OPTICS EXPRESS 2022; 30:39582-39596. [PMID: 36298906 DOI: 10.1364/oe.471629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
Recently, deep reinforcement learning (DRL) for metasurface design has received increased attention for its excellent decision-making ability in complex problems. However, time-consuming numerical simulation has hindered the adoption of DRL-based design method. Here we apply the Deep learning-based virtual Environment Proximal Policy Optimization (DE-PPO) method to design the 3D chiral plasmonic metasurfaces for flexible targets and model the metasurface design process as a Markov decision process to help the training. A well trained DRL agent designs chiral metasurfaces that exhibit the optimal absolute circular dichroism value (typically, ∼ 0.4) at various target wavelengths such as 930 nm, 1000 nm, 1035 nm, and 1100 nm with great time efficiency. Besides, the training process of the PPO agent is exceptionally fast with the help of the deep neural network (DNN) auxiliary virtual environment. Also, this method changes all variable parameters of nanostructures simultaneously, reducing the size of the action vector and thus the output size of the DNN. Our proposed approach could find applications in efficient and intelligent design of nanophotonic devices.
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15
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Leite TR, Zschiedrich L, Kizilkaya O, McPeak KM. Resonant Plasmonic-Biomolecular Chiral Interactions in the Far-Ultraviolet: Enantiomeric Discrimination of sub-10 nm Amino Acid Films. NANO LETTERS 2022; 22:7343-7350. [PMID: 36084234 DOI: 10.1021/acs.nanolett.2c01724] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Resonant plasmonic-molecular chiral interactions are a promising route to enhanced biosensing. However, biomolecular optical activity primarily exists in the far-ultraviolet regime, posing significant challenges for spectral overlap with current nano-optical platforms. We demonstrate experimentally and computationally the enhanced chiral sensing of a resonant plasmonic-biomolecular system operating in the far-UV. We develop a full-wave model of biomolecular films on Al gammadion arrays using experimentally derived chirality parameters. Our calculations show that detectable enhancements in the chiroptical signals from small amounts of biomolecules are possible only when tight spectral overlap exists between the plasmonic and biomolecular chiral responses. We support this conclusion experimentally by using Al gammadion arrays to enantiomerically discriminate ultrathin (<10 nm thick) films of tyrosine. Notably, the chiroptical signals of the bare films were within instrumental noise. Our results demonstrate the importance of using far-UV active metasurfaces for enhancing natural optical activity.
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Affiliation(s)
- Tiago Ramos Leite
- Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
| | - Lin Zschiedrich
- JCMwave GmbH, 14050 Berlin, Germany
- Zuse Institute Berlin, 14195 Berlin, Germany
| | - Orhan Kizilkaya
- Louisiana State University Center for Advanced Microstructures and Devices, Baton Rouge, Louisiana 70806, United States
| | - Kevin M McPeak
- Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States
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